A Square Flange provides a strong, leak-proof joint for hydraulic systems and high-pressure pipe connections. With its compact four-bolt square design, it ensures safe sealing where welding or threading is not ideal. Across Riyadh, Dammam, Jeddah, Jubail, and Al-Khobar, industries prefer Square Flange in Saudi for oil & gas, marine, hydraulic, and construction applications.
A Square Flange is a hydraulic pipe connector designed according to JIS B2291, ISO 6164, and SAE standards.
It consists of a square base plate with four bolt holes, a central bore, and an O-ring groove to ensure leak-free operation.
Square flanges are available in carbon steel, stainless steel, and aluminum, making them suitable for high-pressure oil, water, and gas lines.
This design is especially effective in limited-space installations, where circular flanges may not fit easily.
Leak-Proof Sealing: O-ring face seal ensures tight, secure hydraulic joints.
Easy Assembly: Bolted connection allows quick installation and removal.
High Pressure Resistance: Supports up to 35 MPa (350 bar) depending on size and material.
Compact Design: Fits into confined hydraulic layouts.
Versatile Mounting: Available as socket weld, butt weld, and threaded types.
Corrosion Resistant: Stainless steel and zinc-plated versions resist harsh Saudi environments.
Wide Compatibility: Interchangeable with SAE and ISO-standard hydraulic fittings.
Hydraulic Systems: Connects pumps, valves, and actuators in heavy machinery.
Marine & Offshore: Resists corrosion in saltwater conditions.
Oil & Gas Refineries: Handles high-pressure fluid transmission safely.
Industrial Equipment: Used in presses, cranes, and process lines.
Construction Equipment: Suitable for earthmovers and hydraulic excavators.
Power Generation: Provides sealed hydraulic lines in turbines and control systems.
General Engineering: Ideal for factory piping and machine assemblies.
ISO 6164 – Hydraulic Fluid Power Flange Connections
SAE J518 – Hydraulic Flanged Connections
JIS B2291 – Japanese Industrial Standard for Square Flanges
ASTM A105 / A182 – Forged Carbon & Stainless Steel Flanges
NACE MR0175 / ISO 15156 – Materials for Sour Service
These certifications ensure pressure integrity, dimensional accuracy, and corrosion resistance for demanding applications in Saudi Arabia’s industries.
1) What is a Square Flange used for?
It’s used to connect hydraulic lines or pipe fittings under high pressure with an O-ring seal.
2) What materials are available?
Common materials include carbon steel, stainless steel, and aluminum for various industrial needs.
3) What pressure can it handle?
Standard models can withstand up to 350 bar (35 MPa).
4) Are Square Flanges reusable?
Yes—when properly maintained and O-rings are replaced during servicing.
5) What are the connection types available?
Socket weld, butt weld, and threaded variations suit multiple system configurations.
6) Are Square Flanges suitable for marine use?
Yes. Stainless steel versions resist corrosion in offshore and coastal environments.
7) Where can I buy Square Flanges in Saudi?
At Nassguard, serving Riyadh, Dammam, Jubail, Jeddah, and Al-Khobar with certified flange solutions.
The Square Flange is an ideal solution for compact hydraulic and piping systems requiring leak-proof, high-pressure performance.
With a sturdy design and multiple material options, it’s perfect for Saudi Arabia’s industrial, oil & gas, and marine sectors.
Choose Nassguard for top-quality, certified Square Flange in Saudi, built for reliability and long-term operation.
| Specification | Details |
|---|---|
| Product Name | Square Flange |
| Design Standards | JIS B2291, ISO 6164, SAE J518 |
| Material Options | Carbon Steel, Stainless Steel (SS316 / SS304), Aluminum |
| Size Range | ¼” to 6” |
| Pressure Rating | Up to 35 MPa (350 bar) |
| Connection Types | Socket Weld / Butt Weld / Threaded |
| Seal Type | O-Ring Face Seal |
| Surface Treatment | Zinc Plated / Black Oxide / Nickel Coated |
| Applications | Hydraulic Systems, Marine, Oil & Gas |
| Supplier | Nassguard – Saudi Arabia |